## Science

Microbiology

## IF MEN WERE MONSTERS

My homage to 1950's monster movie posters with Micro-organism inspired monsters!

Physics

**Atoms**

Atoms are really cool. Any type of matter in the universe, is composed of atoms. They're made of three different types of smaller particles, called subatomic particles. These three are:

- Protons
- Neutrons
- Electrons

The center of an atom is called the nucleus, and that is where the protons and neutrons are. Protons are positively charged, Neutrons have no charge at all, and the Electrons fly around the nucleus in a small cloud. Electrons have a negative charge, and they are attracted to the positive nucleus by the same electrical force which causes magnets to work. That's how atoms stay together.

In a normal (neutral) atom, the number of electrons and protons are equal. The number of neutrons is often the same as the protons and electrons, but this is not always the case.

References - "What is an atom" and "What are atoms made of?"

## MATH

**Prime numbers**

Prime numbers!!! Math fans love them, well- alot of math fans anyway. A prime number, is a number that can only be divided (without a remainder) by itself and the number 1.

Let's look at the number 23, for example.

23 divided by 17 = 1.35294117647

23 divided by 5 = 4.6

23 divided by 23 = 1

23 divided by 1 = 23

Whether you know it or not, we use prime numbers every day. Ever do any online shopping? Prime numbers form the basis of the advanced encryption technology that helps keep online transactions safe. It's called the RSA algorithm. It's secure because the absence of divisors means that even the most sophisticated computers can't crack the code by looking for patterns.

Here are some cool facts about prime numbers-

- 0 and 1 are not considered prime numbers
- 2 is the only even prime number (all other even numbers can be divided by 2)
- Except for 0 and 1, a number is either a prime number, or a composite number. A composite number is defined as any number greater than 1, that is not a prime number.

References-

Prime Number facts

Here is an awesome article about the RSA algorithm